Valve-guard.



W. THOMPSON.

VALVE GUARD. APPLIOATIOH FILED 11110.3, 190B.

Patented June 1, 1909.

TH: NORRIS PETERS co, wasl-unwmv. D. c

unrra earns r an F WILLIAM THOMPSON, OF KALAMAZOO, MICHIGAN.

VALVEG-UARD.

Specification of Letters Patent.

Application filed December 3, 1908.

Patented June 1, 1909. Serial no. 465,865.

ture, although it is applicable for use in other relations.

The main object of this invention is to provide an improved valve guard which is quickly adjusted to prevent or to permit the manipulation of the valve.

Further objects, and objects relating to structural details, will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification.

The invention is clearly defined and pointed out in the claims.

A structure embodying the features of my invention is clearly illustrated in the ac companying drawing, forming a part of this specification, in which: Figure 1 is a detail plan of a structure embodying the features of my invention. Fig. 2 is a detail elevation thereof. Fig. 3 is a rear elevation of my improved guard, the gas supply being indicated by dotted lines.

In the drawing, similar numerals of reference refer to similar parts throughout the several views.

Referring to the drawing, 1 represents the wall of an oven, 2 an oven burner, and 3 the. gas supply pipe. The burner valve casing 4 projects laterally from the pipe 3 and is arranged to deliver to the burner Z. The valve stem 5 projects upwardly from the valve casing, and is provided with a laterally-projecting hand piece 6 adapted to lie substantially parallel with the gas supply pipe 3, when in its closed position, as is illustrated in the accompanying drawing.

The guard 7 is pivotally and slidably mounted upon the supply pipe, so that it can be adjusted to bring it into its engaging position, as is illustrated in Fig. l, or moved out of its engaging position, as shown by dotted lines in Fig. 1, in which position it is free to swing upon the pipe. This guard is preferably formed of a single piece of sheet metal,

its lower end being rolled about the pipe to form the bearing portion 8. The finger piece 9 is also preferably made integral when the guard is formed of sheet metal. The guard is provided with a forwardly-projecting portion 10 adapted to engage the valve casing when the guard is in its operative position, so that its revolution upon the pipe is prevented thereby, the hand piece 6 preventing its rearward movement. By thus formmg and arranging the parts, they are very quickly ad usted into and out of operative position, and the guard can be used in con nection with or applied to the common construction of valves.

When the guard is adjusted to its closed position, it prevents the manipulation of the valve until it is moved out of position, and further serves as a signal to indicate that the valve is closed, as, with the structure illustrated, the guard will not remain in its operative position unless the valve is closed.

The structure is, as stated, economical to produce, and, at the same time, is entirely effective for the purpose.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. The combination with a gas supply pipe, of a valve casing connected thereto; a valve stem having a laterally-projecting hand piece; and a guard pivotally and slidably mounted upon said supply pipe whereby it may be adjusted into and out of engagement with said valve stem hand piece, said guard being adapted to engage said valve casing when in its operative position whereby its revolution on the said pipe is prevented, said guard being formed of a single piece of sheet metal rolled about said pipe and being provided with an integrally formed finger piece.

2. The combination with a gas supply pipe, of a valve casing connected thereto; a valve stem having a laterally-projecting hand piece; and a guard pivotally and slidably mounted upon said supply pipe whereby it may be adjusted into and out of engagement with said valve stem hand piece, said guard being adapted to engage said valve casing when in its operative position whereby its revolution on the said pipe is prevented.

3. The combination with a gas supply pipe, of a valve casing connected thereto; a valve stem having a laterally-projecting hand piece; and a guard mounted upon said supply pipe whereby it may be adjusted into and out of engagement with said valve stem hand piece, said guard being adapted to e11- gage said valve casing when in its operative posit-ion whereby its revolution on the said pipe is prevented, said guard being formed of a single piece of sheet metal rolled about said pipe and being provided with an integrally formed finger piece.

at. The combination with a gas supply pipe, of a valve casing connected thereto; a valve stem having a laterally-projecting hand piece; and a guard mounted upon said supply pipe whereby it may be adjusted into and out of engagement with said valve stem hand piece, said guard being adapted to en gage said valve casing when in its operative position whereby its revolution on the said pipe is prevented.

The combination with a gas supply pipe, of a valve casing connected thereto; a valve stem having a hand piece; and a guard pivotally and slidably mounted upon said supply pipe whereby it may be adjusted into and out of engagement with said valve stem hand piece, said guard being formed of a single piece of sheet metal rolled about said pipe and being provided wit-h an integrally formed finger piece.

7. The combination with a. gas supply pipe, of a valve casing connected thereto; a valve stem having a hand piece; and a guard slidably mounted upon said supply pipe whereby it may be adjusted into and out of engagement with said valve. stem a:

hand piece, said guard being formed of a single piece of sheet metal rolled about said pipe and being provided with an integrally formed finger piece.

8. The combination with a gas supply pipe, of a valve casing connected thereto; a valve stem having a hand piece; and a guard slidably mounted upon said supply pipe whereby it. may be adjusted into and out of engagement with said valve stem hand piece.

In witness whereof, I have hereunto set my hand and seal in the presence of two witnesses.

lV. E. Dnnwnx'r. 

